[Transitional cell carcinoma of the urinary bladder in adolescence: report of a case]

The patient is a 17 year-old girl who was admitted with the chief complaint of asymptomatic gross hematuria. Excretory urography showed a filling defect of the urinary bladder. Abdominal echography showed a papillary tumor of the urinary bladder. Cystoscopy showed a papillary bladder tumor on the posterior area of left ureteral orifice. Transurethral resection of the bladder tumor was performed for diagnosis and treatment. Pathological diagnosis was papillary transitional cell carcinoma (grade 1, pTa). Thirty cases of transitional cell tumor of the urinary bladder in childhood and adolescence have been reported in Japan including this case.